<?php
$this->datePicker("dp1", '', array('defaultDate' => date('Y/m/d', time())));

$this->jQuery()->addJavascript('
    jQuery(".multiselect").css("visibility", "hidden");
    jQuery(function(){
        jQuery(".multiselect").multiselect({sortable: true});
        jQuery(".ui-multiselect div.available").width("45%");
        jQuery(".ui-multiselect div.selected").width("45%");
        jQuery("div.ui-multiselect").width("100%");
        jQuery("div.ui-multiselect").css("border", "none");
        jQuery(".multiselect").css("visibility", "visible");
        jQuery(".ui-multiselect div.available .connected-list").height("150%");
        jQuery(".ui-multiselect div.selected .connected-list").height("150%");
    });'
);

echo $this->form;